Reposting, Sharing content articles and information is a cornerstone of social media. Where have you been?
You are just saying this because steemit is a platform which allows you to earn, unlike say facebook.
So get your panties out of a twist you egotistical fk. Nowhere he claims this is his own info. You should be flattered and eager people are willing to share your own info. But somehow you feel you are being disadvantaged.